Exchange 2010 Problem with backup restoration

let us know how are you trying to restore. did you watched full video which is posted

https://www-secure.symantec.com/connect/videos/exchange-2010-sp2-grt-netbackup-75

it has Restore procedure as well as pre-reqs required for restoration.

Please share all relevant info:

NBU version on Server and Exchange server(s) seems to 7.5, right?

DAG or Standalone Exchange?

What are you trying to restore? Information store? Single item?

We can see that the backup was made on bglbg1e10mbx01 but restore is attempted to MAIL.SONATA.LOCAL.
Please explain the relationship here?

Yes based on procedure only the configuration re-check, but restoring is still a problem

DAG or Standalone Exchange?-DAG

What are you trying to restore? Information store? Single item?

We are trying to restore single item from a mailbox

We can see that the backup was made on bglbg1e10mbx01 but restore is attempted to MAIL.SONATA.LOCAL.
Please explain the relationship here?

bglbg1e10mbx01 is mailbox server and mail.sonata.local is client acess server (CAS)array name .

you cannot restore mail item to cas servers

Did you created No.Restrictions file mentioned in video and transcript. If this is not present, you won't be allowed to perform redirected restores.
moreover Has all the DAG members and CAS servers entered correctly under Distrubute Application mappings

Add DAG Virtual name against Mailbox servers and CAS servers

Also have you ran powershell script mentioned in video and transcript (impersonation rule required for restore)

You also need to ensure that NBU client software is installed on all DAG members and CAS server.

Ensure successful forward and reverse lookup between NBU server(s) and CAS server.

Please see NetBackup for Microsoft Exchange Server Administrator's Guide http://www.symantec.com/docs/DOC5172 for restore requirements and steps to follow.

We tried the above steps and below the error

7/4/2012 1:18:01 PM - begin Restore
7/4/2012 1:18:02 PM - restoring image bglbg1e10mbx01_1341322964
7/4/2012 1:18:04 PM - Info bprd(pid=6036) Restoring from copy 1 of image created 07/03/12 19:12:44    
7/4/2012 1:18:06 PM - Info bpbrm(pid=424) MAIL.SONATA.LOCAL is the host to restore to      
7/4/2012 1:18:06 PM - Info bpbrm(pid=424) reading file list from client        
7/4/2012 1:18:07 PM - connecting
7/4/2012 1:18:07 PM - Info bpbrm(pid=424) start nbfsd on client         
7/4/2012 1:18:07 PM - Info bpbrm(pid=424) start nbgre on client         
7/4/2012 1:18:14 PM - Info tar32(pid=0) Restore started           
7/4/2012 1:18:14 PM - connected; connect time: 00:00:07
7/4/2012 1:19:42 PM - Info tar32(pid=0) done. status 29          
7/4/2012 1:19:43 PM - Info tar32(pid=0) done. status: 29          
7/4/2012 1:19:43 PM - Info tar32(pid=0) done. status: 29: failed trying to exec a command    
7/4/2012 1:19:43 PM - Error bpbrm(pid=424) client restore EXIT STATUS 29: failed trying to exec a command  
7/4/2012 1:19:43 PM - restored image bglbg1e10mbx01_1341322964 - (failed trying to exec a command(29)); restore time 00:01:41
7/4/2012 1:19:43 PM - end Restore; elapsed time: 00:01:42
MS-Exchange-Server policy restore error(2810)

do not perform restore to CAS server. make it mailbox server

While restoring we have set teh optioon to restore to it's original location, however the restore job was trying to connect to my CAS server instead of mailbox server, Let us know any other option we need to check

From which server are you performing restore.

Open BAR gui from either of DAG mailbox member server. (Run as ADMINISTRATOR)

Set source and destination properly

Source would be DAG same what you specified in policy during backup. ..Destination could be either of your mailbox server where user mailbox is present.

backup server would be master server

now you should be able to perform restore without issues. if only this was causing restore failure